EP4229924A1 - Configuration de signal de réveil pour le téléavertissement d'un dispositif sans fil new radio - Google Patents

Configuration de signal de réveil pour le téléavertissement d'un dispositif sans fil new radio

Info

Publication number
EP4229924A1
EP4229924A1 EP21794364.6A EP21794364A EP4229924A1 EP 4229924 A1 EP4229924 A1 EP 4229924A1 EP 21794364 A EP21794364 A EP 21794364A EP 4229924 A1 EP4229924 A1 EP 4229924A1
Authority
EP
European Patent Office
Prior art keywords
pwus
rnti
network node
paging
monitored
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21794364.6A
Other languages
German (de)
English (en)
Inventor
Sina MALEKI
Andres Reial
Ajit Nimbalker
Ravikiran Nory
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of EP4229924A1 publication Critical patent/EP4229924A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to wireless communications, and in particular, to configuring a wakeup signal for New Radio (NR) wireless device (WD) paging.
  • NR New Radio
  • WD wireless device
  • the Third Generation Partnership Project (3GPP) has developed and is developing standards for Fourth Generation (4G) (also referred to as Long Term Evolution (LTE)) and Fifth Generation (5G) (also referred to as New Radio (NR)) wireless communication systems.
  • 4G fourth Generation
  • 5G Fifth Generation
  • Such systems provide, among other features, broadband communication between network nodes, such as base stations, and mobile wireless devices (WD), such as user equipment (UE), as well as communication between network nodes and between WDs.
  • WD mobile wireless devices
  • UE user equipment
  • 6G wireless communication systems are also under development.
  • Wireless communication systems according to the 3 GPP may include one or more of the following channels:
  • PDCCH Physical downlink control channel
  • PUCCH Physical uplink control channel
  • PRACH Physical random access channel
  • Idle/inactive discontinuous reception is an energy saving mechanism allowing the WD to remain in deep sleep most of the time when no data transmission is ongoing.
  • DRX operation by a WD entails paging monitoring and radio resource management (RRM) measurements to determine the appropriate camping cell.
  • the network such as via a network node, configures the WD with a DRX period that determines the paging monitoring rate.
  • RRM measurements are performed at the same rate.
  • mMTC machine type communications
  • NB-IoT narrow band Internet of things
  • WUS wake-up signal
  • the approach defined a sequence-based signal design and addressed primarily the use case associated with physical downlink control channel (PDCCH) coverage extension, i.e., paging PDCCH repetition in a paging occasion (PO).
  • PDCCH physical downlink control channel
  • PO paging occasion
  • the approach may be referred to as mMTC-WUS.
  • the cDRX framework can be used to reduce unnecessary monitoring of scheduling PDCCH messages, when no new data is available for transmission in layer 1 (LI).
  • WUS for cDRX has been specified in 3GPP Release 16, using a PDCCH- based WUS design. It may be referred to as connected mode-WUS.
  • a synchronization signal block occupies 20 resource blocks (RBs) and includes 3 components: a primary synchronization signal (PSS) for coarse synchronization and cell group identification, a secondary synchronization signal (SSS) for cell identification, and a physical broadcast channel (PBCH) for primary system information (SI) delivery (via a master information block (MIB)).
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • PBCH physical broadcast channel
  • SI primary system information
  • MIB master information block
  • the PSS and the SSS are sequence-based while the PBCH is encoded and includes demodulation reference signals (DMRS) for channel estimation to enable decoding.
  • DMRS demodulation reference signals
  • FIG. l is a diagram of example frequency resource assignments.
  • FIG. 2 is a diagram of example temporal resources and symbols.
  • FIG. 3 is a diagram of a distribution in time of multiple SSB beams.
  • SS block time locations are indexed from 0 to L-l in increasing order within a half radio frame:
  • SS block time indices are indicated by the 2 least significant bits (LSB) of the 3 bits indicating 8 different PBCH-DMRS sequences (the most significant bit (MSB) is used for half-frame index);
  • L 8: a) SS block time indices are indicated by 8 different PBCH-DMRS sequences
  • MSBs of a SS block time index are indicated in NR-PBCH payload ;
  • FIG. 4 shows an example, using a 120kHZ subcarrier spacing (SCS), of the indication of SSB time index from 0 to 63. Note that each smallest shaded box is or corresponds to a slot, each of which includes 2 SSBs, and 8 DM-RS sequences maps to 4 boxes. The shaded boxes in FIG. 4 may represent an alternating sequence of slots.
  • SCS subcarrier spacing
  • Some embodiments advantageously provide methods, systems, and apparatuses for configuring a wakeup signal for New Radio (NR) wireless device (WD) paging.
  • NR New Radio
  • WD wireless device
  • Some embodiments include several mechanisms with which the NR WD can be configured with WUS for paging (from here on PWUS) and its underlying parameters.
  • PWUS is included in a downlink control information (DCI) signal associated with a specific radio network temporary identifier (RNTI).
  • DCI downlink control information
  • RNTI radio network temporary identifier
  • the PWUS configuration for a NR WD can help the WD to shorten the average wake-up time before a PO and thereby achieve power savings.
  • a network node is configured to communicate with a wireless device, WD.
  • the network node includes processing circuitry configured to configure a paging wake up signal, PWUS, the PWUS being associated with a radio network temporary identifier, RNTI, and including an indication of at least one paging occasion, PO, to be one of monitored and not monitored by the WD.
  • the network node also includes a radio interface in communication with the processing circuitry and configured to transmit the PWUS to the WD.
  • the RNTI to which the PWUS is associated depends on a format of downlink control information, DCI, configured to carry the PWUS transmitted by the radio interface.
  • the RNTI to which the PWUS is associated is a P-RNTI when the DCI format is 1-0.
  • the PWUS is configured to wake up the WD from one of an idle mode and an inactive mode.
  • the processing circuitry is further configured to configure the WD to monitor the PWUS according to a selected one of a plurality of search space configurations.
  • the PWUS is associated with a plurality of POs.
  • each of the at least one PO is selected to be one of monitored and not monitored based on a formula.
  • the PWUS is included in a downlink control information, DCI, message on a physical downlink control channel, PDCCH.
  • the DCI message includes PO usage information.
  • a DCI message size of zero indicates that an upcoming PO is to be one of monitored and not monitored.
  • the processing circuitry is further configured to multiplex the DCI message with other DCI messages based on a network load.
  • the PWUS further indicates which of a plurality of upcoming POs have a paging message.
  • the PWUS is configured by the network node to indicate a PO to be one of monitored and not monitored based on a frequency of paging.
  • the PWUS is configured to be valid for a finite duration of time.
  • a method in a network node configured to communicate with a wireless device, WD includes configuring a paging wake up signal, PWUS, the PWUS being associated with a radio network temporary identifier, RNTI, and including an indication of at least one paging occasion, PO, to be one of monitored and not monitored by the WD.
  • the method also includes transmitting the PWUS to the WD.
  • the RNTI to which the PWUS is associated depends on a format of downlink control information, DCI, configured to carry the PWUS transmitted by the radio interface.
  • the RNTI to which the PWUS is associated is a P-RNTI when the DCI format is 1-0.
  • the PWUS is configured to wake up the WD from one of an idle mode and an inactive mode.
  • the method also includes configuring the WD to monitor the PWUS according to a selected one of a plurality of search space configurations.
  • the PWUS is associated with a plurality of POs.
  • each of the at least one PO is selected to be one of monitored and not monitored based on a formula.
  • the PWUS is included in a downlink control information, DCI, message on a physical downlink control channel, PDCCH.
  • the DCI message include PO usage information.
  • a DCI message size of zero indicates that an upcoming PO is to be one of monitored and not monitored.
  • the processing circuitry is further configured to multiplex the DCI message with other DCI messages based on a network load.
  • the PWUS further indicates which of a plurality of upcoming POs have a paging message.
  • the PWUS is configured by the network node to indicate a PO to be one of monitored and not monitored based on a frequency of paging.
  • the PWUS is configured to be valid for a finite duration of time.
  • a WD configured to communicate with a network node.
  • the WD includes a radio interface configured to receive a paging wake up signal, PWUS, associated with a radio network temporary identifier, RNTI, the PWUS including an indication of at least one paging occasion, PO, to be one of monitored and not monitored.
  • the WD also includes processing circuitry in communication with the radio interface and configured to one of monitor and not monitor at least one of the at least one PO as indicated by the PWUS.
  • the RNTI to which the PWUS is associated depends on a format of downlink control information, DCI, configured to carry the PWUS.
  • the RNTI to which the PWUS is associated is a P-RNTI.
  • the RNTI to which the PWUS is associated is a ps-RNTI.
  • the RNTI to which the PWUS is associated is a paging power saving RNTI.
  • the PWUS is configured to wake up the WD from one of an idle mode and an inactive mode.
  • the processing circuitry is further configured to monitor a PWUS according to a selected one of a plurality of search space configurations.
  • a method in a WD configured to communicate with a network node.
  • the method includes receiving a paging wake up signal, PWUS, associated with a radio network temporary identifier, RNTI, the PWUS including an indication of at least one paging occasion, PO, to be one of monitored and not monitored.
  • the method also includes one of monitoring and not monitoring at least one of the at least one PO as indicated by the PWUS.
  • the RNTI to which the PWUS is associated depends on a format of downlink control information, DCI, configured to carry the PWUS.
  • the RNTI to which the PWUS is associated is a P-RNTI.
  • the RNTI to which the PWUS is associated is a ps-RNTI.
  • the RNTI to which the PWUS is associated is a paging power saving RNTI.
  • the PWUS is configured to wake up the WD from one of an idle mode and an inactive mode.
  • the method also includes monitoring a PWUS according to a selected one of a plurality of search space configurations.
  • FIG. l is a diagram of frequency resource assignments
  • FIG. 2 is a diagram of temporal resources and symbols
  • FIG. 3 is a diagram of a distribution in time of multiple SSB beams
  • FIG 4 is an illustration showing the indication of SSB time index from 0 to 63;
  • FIG. 5 is a schematic diagram of an example network architecture illustrating a communication system connected via an intermediate network to a host computer according to the principles in the present disclosure
  • FIG. 6 is a block diagram of a host computer communicating via a network node with a wireless device over an at least partially wireless connection according to some embodiments of the present disclosure
  • FIG. 7 is a flowchart illustrating example methods implemented in a communication system including a host computer, a network node and a wireless device for executing a client application at a wireless device according to some embodiments of the present disclosure
  • FIG. 8 is a flowchart illustrating example methods implemented in a communication system including a host computer, a network node and a wireless device for receiving user data at a wireless device according to some embodiments of the present disclosure
  • FIG. 9 is a flowchart illustrating example methods implemented in a communication system including a host computer, a network node and a wireless device for receiving user data from the wireless device at a host computer according to some embodiments of the present disclosure
  • FIG. 10 is a flowchart illustrating example methods implemented in a communication system including a host computer, a network node and a wireless device for receiving user data at a host computer according to some embodiments of the present disclosure
  • FIG. 11 is a flowchart of an example process in a network node for configuring a wakeup signal for New Radio (NR) wireless device (WD) paging;
  • NR New Radio
  • WD wireless device
  • FIG. 12 is a flowchart of an example process in a wireless device for configuring a wakeup signal for New Radio (NR) wireless device (WD) paging;
  • NR New Radio
  • WD wireless device
  • FIG. 13 is a flowchart of another example process in a network node according to some embodiments of the present disclosure.
  • FIG. 14 is a flowchart of another example process in a wireless device according to some embodiments of the present disclosure.
  • FIG. 15 is an example of PWUS detection timing. DETAILED DESCRIPTION
  • the embodiments reside primarily in combinations of apparatus components and processing steps related to configuring a wakeup signal for New Radio (NR) wireless device (WD) paging.
  • NR New Radio
  • WD wireless device
  • relational terms such as “first” and “second,” “top” and “bottom,” and the like, may be used solely to distinguish one entity or element from another entity or element without necessarily requiring or implying any physical or logical relationship or order between such entities or elements.
  • the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the concepts described herein.
  • the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the joining term, “in communication with” and the like may be used to indicate electrical or data communication, which may be accomplished by physical contact, induction, electromagnetic radiation, radio signaling, infrared signaling or optical signaling, for example.
  • electrical or data communication may be accomplished by physical contact, induction, electromagnetic radiation, radio signaling, infrared signaling or optical signaling, for example.
  • Coupled may be used herein to indicate a connection, although not necessarily directly, and may include wired and/or wireless connections.
  • network node can be any kind of network node comprised in a radio network which may further comprise any of base station (BS), radio base station, base transceiver station (BTS), base station controller (BSC), radio network controller (RNC), g Node B (gNB), evolved Node B (eNB or eNodeB), Node B, multi-standard radio (MSR) radio node such as MSR BS, multi-cell/multicast coordination entity (MCE), integrated access and backhaul (IAB) node, relay node, donor node controlling relay, radio access point (AP), transmission points, transmission nodes, Remote Radio Unit (RRU) Remote Radio Head (RRH), a core network node (e.g., mobile management entity (MME), self-organizing network (SON) node, a coordinating node, positioning node, MDT node, etc.), an external node (e.g., 3rd party node, a node external to the current network), nodes in distributed antenna system (
  • BS base station
  • wireless device or a user equipment (UE) are used interchangeably.
  • the WD herein can be any type of wireless device capable of communicating with a network node or another WD over radio signals, such as wireless device (WD).
  • the WD may also be a radio communication device, target device, device to device (D2D) WD, machine type WD or WD capable of machine to machine communication (M2M), low-cost and/or low-complexity WD, a sensor equipped with WD, Tablet, mobile terminals, smart phone, laptop embedded equipped (LEE), laptop mounted equipment (LME), USB dongles, Customer Premises Equipment (CPE), an Internet of Things (loT) device, or a Narrowband loT (NB-IOT) device etc.
  • D2D device to device
  • M2M machine to machine communication
  • M2M machine to machine communication
  • Tablet mobile terminals
  • smart phone laptop embedded equipped (LEE), laptop mounted equipment (LME), USB dongles
  • CPE Customer Premises Equipment
  • LME Customer Premises Equipment
  • NB-IOT Narrowband loT
  • radio network node can be any kind of a radio network node which may comprise any of base station, radio base station, base transceiver station, base station controller, network controller, RNC, evolved Node B (eNB), Node B, gNB, Multi-cell/multicast Coordination Entity (MCE), IAB node, relay node, access point, radio access point, Remote Radio Unit (RRU) Remote Radio Head (RRH).
  • RNC evolved Node B
  • MCE Multi-cell/multicast Coordination Entity
  • IAB node IAB node
  • relay node access point
  • radio access point radio access point
  • RRU Remote Radio Unit
  • RRH Remote Radio Head
  • wireless devices such as, for example, 3GPP LTE and/or New Radio (NR)
  • WCDMA Wide Band Code Division Multiple Access
  • WiMax Worldwide Interoperability for Microwave Access
  • UMB Ultra Mobile Broadband
  • GSM Global System for Mobile Communications
  • functions described herein as being performed by a wireless device or a network node may be distributed over a plurality of wireless devices and/or network nodes. In other words, it is contemplated that the functions of the network node and wireless device described herein are not limited to performance by a single physical device and, in fact, can be distributed among several physical devices.
  • a method in a WD includes waking up upon receiving a paging wake up signal (PWUS) and monitoring for a paging message when an indication in the received PWUS indicates an upcoming paging opportunity (PO).
  • PWUS paging wake up signal
  • PO upcoming paging opportunity
  • FIG. 5 a schematic diagram of a communication system 10, according to an embodiment, such as a 3 GPP -type cellular network that may support standards such as LTE and/or NR (5G), which comprises an access network 12, such as a radio access network, and a core network 14.
  • the access network 12 comprises a plurality of network nodes 16a, 16b, 16c (referred to collectively as network nodes 16), such as NBs, eNBs, gNBs or other types of wireless access points, each defining a corresponding coverage area 18a, 18b, 18c (referred to collectively as coverage areas 18).
  • Each network node 16a, 16b, 16c is connectable to the core network 14 over a wired or wireless connection 20.
  • a first wireless device (WD) 22a located in coverage area 18a is configured to wirelessly connect to, or be paged by, the corresponding network node 16a.
  • a second WD 22b in coverage area 18b is wirelessly connectable to the corresponding network node 16b. While a plurality of WDs 22a, 22b (collectively referred to as wireless devices 22) are illustrated in this example, the disclosed embodiments are equally applicable to a situation where a sole WD is in the coverage area or where a sole WD is connecting to the corresponding network node 16.
  • a WD 22 can be in simultaneous communication and/or configured to separately communicate with more than one network node 16 and more than one type of network node 16.
  • a WD 22 can have dual connectivity with a network node 16 that supports LTE and the same or a different network node 16 that supports NR.
  • WD 22 can be in communication with an eNB for LTEZE-UTRAN and a gNB for NR/NG-RAN.
  • the communication system 10 may itself be connected to a host computer 24, which may be embodied in the hardware and/or software of a standalone server, a cloud- implemented server, a distributed server or as processing resources in a server farm.
  • the host computer 24 may be under the ownership or control of a service provider, or may be operated by the service provider or on behalf of the service provider.
  • the connections 26, 28 between the communication system 10 and the host computer 24 may extend directly from the core network 14 to the host computer 24 or may extend via an optional intermediate network 30.
  • the intermediate network 30 may be one of, or a combination of more than one of, a public, private or hosted network.
  • the intermediate network 30, if any, may be a backbone network or the Internet. In some embodiments, the intermediate network 30 may comprise two or more sub-networks (not shown).
  • the communication system of FIG. 1 as a whole enables connectivity between one of the connected WDs 22a, 22b and the host computer 24.
  • the connectivity may be described as an over-the-top (OTT) connection.
  • the host computer 24 and the connected WDs 22a, 22b are configured to communicate data and/or signaling via the OTT connection, using the access network 12, the core network 14, any intermediate network 30 and possible further infrastructure (not shown) as intermediaries.
  • the OTT connection may be transparent in the sense that at least some of the participating communication devices through which the OTT connection passes are unaware of routing of uplink and downlink communications.
  • a network node 16 may not or need not be informed about the past routing of an incoming downlink communication with data originating from a host computer 24 to be forwarded (e.g., handed over) to a connected WD 22a. Similarly, the network node 16 need not be aware of the future routing of an outgoing uplink communication originating from the WD 22a towards the host computer 24.
  • a network node 16 is configured to include a PWUS configuration unit 32 which is configured to configure a paging wake up signal, PWUS, the PWUS being associated with a radio network temporary identifier, RNTI, and including an indication of at least one paging occasion, PO, to be one of monitored and not monitored by the WD 22.
  • the WD is configured to include a PWUS monitoring unit 34 that is configured to monitor or not monitor at least one of the at least one PO as indicated by the PWUS.
  • a host computer 24 comprises hardware (HW) 38 including a communication interface 40 configured to set up and maintain a wired or wireless connection with an interface of a different communication device of the communication system 10.
  • the host computer 24 further comprises processing circuitry 42, which may have storage and/or processing capabilities.
  • the processing circuitry 42 may include a processor 44 and memory 46.
  • the processing circuitry 42 may comprise integrated circuitry for processing and/or control, e.g., one or more processors and/or processor cores and/or FPGAs (Field Programmable Gate Array) and/or ASICs (Application Specific Integrated Circuitry) adapted to execute instructions.
  • processors and/or processor cores and/or FPGAs Field Programmable Gate Array
  • ASICs Application Specific Integrated Circuitry
  • the processor 44 may be configured to access (e.g., write to and/or read from) memory 46, which may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).
  • memory 46 may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).
  • Processing circuitry 42 may be configured to control any of the methods and/or processes described herein and/or to cause such methods, and/or processes to be performed, e.g., by host computer 24.
  • Processor 44 corresponds to one or more processors 44 for performing host computer 24 functions described herein.
  • the host computer 24 includes memory 46 that is configured to store data, programmatic software code and/or other information described herein.
  • the software 48 and/or the host application 50 may include instructions that, when executed by the processor 44 and/or processing circuitry 42, causes the processor 44 and/or processing circuitry 42 to perform the processes described herein with respect to host computer 24.
  • the instructions may be software associated with the host computer 24.
  • the software 48 may be executable by the processing circuitry 42.
  • the software 48 includes a host application 50.
  • the host application 50 may be operable to provide a service to a remote user, such as a WD 22 connecting via an OTT connection 52 terminating at the WD 22 and the host computer 24.
  • the host application 50 may provide user data which is transmitted using the OTT connection 52.
  • the “user data” may be data and information described herein as implementing the described functionality.
  • the host computer 24 may be configured for providing control and functionality to a service provider and may be operated by the service provider or on behalf of the service provider.
  • the processing circuitry 42 of the host computer 24 may enable the host computer 24 to observe, monitor, control, transmit to and/or receive from the network node 16 and or the wireless device 22.
  • the communication system 10 further includes a network node 16 provided in a communication system 10 and including hardware 58 enabling it to communicate with the host computer 24 and with the WD 22.
  • the hardware 58 may include a communication interface 60 for setting up and maintaining a wired or wireless connection with an interface of a different communication device of the communication system 10, as well as a radio interface 62 for setting up and maintaining at least a wireless connection 64 with a WD 22 located in a coverage area 18 served by the network node 16.
  • the radio interface 62 may be formed as or may include, for example, one or more RF transmitters, one or more RF receivers, and/or one or more RF transceivers.
  • the communication interface 60 may be configured to facilitate a connection 66 to the host computer 24.
  • the connection 66 may be direct or it may pass through a core network 14 of the communication system 10 and/or through one or more intermediate networks 30 outside the communication system 10.
  • the hardware 58 of the network node 16 further includes processing circuitry 68.
  • the processing circuitry 68 may include a processor 70 and a memory 72.
  • the processing circuitry 68 may comprise integrated circuitry for processing and/or control, e.g., one or more processors and/or processor cores and/or FPGAs (Field Programmable Gate Array) and/or ASICs (Application Specific Integrated Circuitry) adapted to execute instructions.
  • FPGAs Field Programmable Gate Array
  • ASICs Application Specific Integrated Circuitry
  • the processor 70 may be configured to access (e.g., write to and/or read from) the memory 72, which may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).
  • volatile and/or nonvolatile memory e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).
  • the network node 16 further has software 74 stored internally in, for example, memory 72, or stored in external memory (e.g., database, storage array, network storage device, etc.) accessible by the network node 16 via an external connection.
  • the software 74 may be executable by the processing circuitry 68.
  • the processing circuitry 68 may be configured to control any of the methods and/or processes described herein and/or to cause such methods, and/or processes to be performed, e.g., by network node 16.
  • Processor 70 corresponds to one or more processors 70 for performing network node 16 functions described herein.
  • the memory 72 is configured to store data, programmatic software code and/or other information described herein.
  • the software 74 may include instructions that, when executed by the processor 70 and/or processing circuitry 68, causes the processor 70 and/or processing circuitry 68 to perform the processes described herein with respect to network node 16.
  • processing circuitry 68 of the network node 16 may include a PWUS configuration unit 32 which is configured to configure a paging wake up signal, PWUS, the PWUS being associated with a radio network temporary identifier, RNTI, and including an indication of at least one paging occasion, PO, to be one of monitored and not monitored by the WD.
  • the communication system 10 further includes the WD 22 already referred to.
  • the WD 22 may have hardware 80 that may include a radio interface 82 configured to set up and maintain a wireless connection 64 with a network node 16 serving a coverage area 18 in which the WD 22 is currently located.
  • the radio interface 82 may be formed as or may include, for example, one or more RF transmitters, one or more RF receivers, and/or one or more RF transceivers.
  • the hardware 80 of the WD 22 further includes processing circuitry 84.
  • the processing circuitry 84 may include a processor 86 and memory 88.
  • the processing circuitry 84 may comprise integrated circuitry for processing and/or control, e.g., one or more processors and/or processor cores and/or FPGAs (Field Programmable Gate Array) and/or ASICs (Application Specific Integrated Circuitry) adapted to execute instructions.
  • the processor 86 may be configured to access (e.g., write to and/or read from) memory 88, which may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).
  • memory 88 may comprise any kind of volatile and/or nonvolatile memory, e.g., cache and/or buffer memory and/or RAM (Random Access Memory) and/or ROM (Read-Only Memory) and/or optical memory and/or EPROM (Erasable Programmable Read-Only Memory).
  • the WD 22 may further comprise software 90, which is stored in, for example, memory 88 at the WD 22, or stored in external memory (e.g., database, storage array, network storage device, etc.) accessible by the WD 22.
  • the software 90 may be executable by the processing circuitry 84.
  • the software 90 may include a client application 92.
  • the client application 92 may be operable to provide a service to a human or non-human user via the WD 22, with the support of the host computer 24.
  • an executing host application 50 may communicate with the executing client application 92 via the OTT connection 52 terminating at the WD 22 and the host computer 24.
  • the client application 92 may receive request data from the host application 50 and provide user data in response to the request data.
  • the OTT connection 52 may transfer both the request data and the user data.
  • the client application 92 may interact with the user to generate the user data that it provides.
  • the processing circuitry 84 may be configured to control any of the methods and/or processes described herein and/or to cause such methods, and/or processes to be performed, e.g., by WD 22.
  • the processor 86 corresponds to one or more processors 86 for performing WD 22 functions described herein.
  • the WD 22 includes memory 88 that is configured to store data, programmatic software code and/or other information described herein.
  • the software 90 and/or the client application 92 may include instructions that, when executed by the processor 86 and/or processing circuitry 84, causes the processor 86 and/or processing circuitry 84 to perform the processes described herein with respect to WD 22.
  • the processing circuitry 84 of the wireless device 22 may include a PWUS monitoring unit 34 that is configured to monitor or not monitor at least one of the at least one PO as indicated by the PWUS.
  • the inner workings of the network node 16, WD 22, and host computer 24 may be as shown in FIG. 6 and independently, the surrounding network topology may be that of FIG. 5.
  • the OTT connection 52 has been drawn abstractly to illustrate the communication between the host computer 24 and the wireless device 22 via the network node 16, without explicit reference to any intermediary devices and the precise routing of messages via these devices.
  • Network infrastructure may determine the routing, which it may be configured to hide from the WD 22 or from the service provider operating the host computer 24, or both. While the OTT connection 52 is active, the network infrastructure may further take decisions by which it dynamically changes the routing (e.g., on the basis of load balancing consideration or reconfiguration of the network).
  • the wireless connection 64 between the WD 22 and the network node 16 is in accordance with the teachings of the embodiments described throughout this disclosure.
  • One or more of the various embodiments improve the performance of OTT services provided to the WD 22 using the OTT connection 52, in which the wireless connection 64 may form the last segment. More precisely, the teachings of some of these embodiments may improve the data rate, latency, and/or power consumption and thereby provide benefits such as reduced user waiting time, relaxed restriction on file size, better responsiveness, extended battery lifetime, etc.
  • a measurement procedure may be provided for the purpose of monitoring data rate, latency and other factors on which the one or more embodiments improve.
  • the measurement procedure and/or the network functionality for reconfiguring the OTT connection 52 may be implemented in the software 48 of the host computer 24 or in the software 90 of the WD 22, or both.
  • sensors (not shown) may be deployed in or in association with communication devices through which the OTT connection 52 passes; the sensors may participate in the measurement procedure by supplying values of the monitored quantities exemplified above, or supplying values of other physical quantities from which software 48, 90 may compute or estimate the monitored quantities.
  • the reconfiguring of the OTT connection 52 may include message format, retransmission settings, preferred routing etc.; the reconfiguring need not affect the network node 16, and it may be unknown or imperceptible to the network node 16. Some such procedures and functionalities may be known and practiced in the art.
  • measurements may involve proprietary WD signaling facilitating the host computer’s 24 measurements of throughput, propagation times, latency and the like.
  • the measurements may be implemented in that the software 48, 90 causes messages to be transmitted, in particular empty or ‘dummy’ messages, using the OTT connection 52 while it monitors propagation times, errors etc.
  • the host computer 24 includes processing circuitry 42 configured to provide user data and a communication interface 40 that is configured to forward the user data to a cellular network for transmission to the WD 22.
  • the cellular network also includes the network node 16 with a radio interface 62.
  • the network node 16 is configured to, and/or the network node’s 16 processing circuitry 68 is configured to perform the functions and/or methods described herein for preparing/initiating/maintaining/supporting/ending a transmission to the WD 22, and/or preparing/terminating/maintaining/supporting/ending in receipt of a transmission from the WD 22.
  • the host computer 24 includes processing circuitry 42 and a communication interface 40 that is configured to a communication interface 40 configured to receive user data originating from a transmission from a WD 22 to a network node 16.
  • the WD 22 is configured to, and/or comprises a radio interface 82 and/or processing circuitry 84 configured to perform the functions and/or methods described herein for preparing/initiating/maintaining/supporting/ending a transmission to the network node 16, and/or preparing/terminating/maintaining/supporting/ending in receipt of a transmission from the network node 16.
  • FIGS. 5 and 6 show various “units” such as PWUS configuration unit 32, and PWUS monitoring unit 34 as being within a respective processor, it is contemplated that these units may be implemented such that a portion of the unit is stored in a corresponding memory within the processing circuitry. In other words, the units may be implemented in hardware or in a combination of hardware and software within the processing circuitry.
  • FIG. 7 is a flowchart illustrating an example method implemented in a communication system, such as, for example, the communication system of FIGS. 5 and 6, in accordance with one embodiment.
  • the communication system may include a host computer 24, a network node 16 and a WD 22, which may be those described with reference to FIG. 6.
  • the host computer 24 provides user data (Block SI 00).
  • the host computer 24 provides the user data by executing a host application, such as, for example, the host application 50 (Block SI 02).
  • the host computer 24 initiates a transmission carrying the user data to the WD 22 (Block SI 04).
  • the network node 16 transmits to the WD 22 the user data which was carried in the transmission that the host computer 24 initiated, in accordance with the teachings of the embodiments described throughout this disclosure (Block SI 06).
  • the WD 22 executes a client application, such as, for example, the client application 92, associated with the host application 50 executed by the host computer 24 (Block SI 08).
  • FIG. 8 is a flowchart illustrating an example method implemented in a communication system, such as, for example, the communication system of FIG. 5, in accordance with one embodiment.
  • the communication system may include a host computer 24, a network node 16 and a WD 22, which may be those described with reference to FIGS. 5 and 6.
  • the host computer 24 provides user data (Block SI 10).
  • the host computer 24 provides the user data by executing a host application, such as, for example, the host application 50.
  • the host computer 24 initiates a transmission carrying the user data to the WD 22 (Block SI 12).
  • the transmission may pass via the network node 16, in accordance with the teachings of the embodiments described throughout this disclosure.
  • the WD 22 receives the user data carried in the transmission (Block SI 14).
  • FIG. 9 is a flowchart illustrating an example method implemented in a communication system, such as, for example, the communication system of FIG. 5, in accordance with one embodiment.
  • the communication system may include a host computer 24, a network node 16 and a WD 22, which may be those described with reference to FIGS. 5 and 6.
  • the WD 22 receives input data provided by the host computer 24 (Block SI 16).
  • the WD 22 executes the client application 92, which provides the user data in reaction to the received input data provided by the host computer 24 (Block SI 18).
  • the WD 22 provides user data (Block S120).
  • the WD provides the user data by executing a client application, such as, for example, client application 92 (Block S122).
  • client application 92 may further consider user input received from the user.
  • the WD 22 may initiate, in an optional third substep, transmission of the user data to the host computer 24 (Block S124).
  • the host computer 24 receives the user data transmitted from the WD 22, in accordance with the teachings of the embodiments described throughout this disclosure (Block S126).
  • FIG. 10 is a flowchart illustrating an example method implemented in a communication system, such as, for example, the communication system of FIG. 5, in accordance with one embodiment.
  • the communication system may include a host computer 24, a network node 16 and a WD 22, which may be those described with reference to FIGS. 5 and 6.
  • the network node 16 receives user data from the WD 22 (Block S128).
  • the network node 16 initiates transmission of the received user data to the host computer 24 (Block S130).
  • the host computer 24 receives the user data carried in the transmission initiated by the network node 16 (Block SI 32).
  • FIG. 11 is a flowchart of an example process in a network node 16 for configuring a wakeup signal for New Radio (NR) wireless device (WD) paging.
  • One or more blocks described herein may be performed by one or more elements of network node 16 such as by one or more of processing circuitry 68 (including the PWUS configuration unit 32), processor 70, radio interface 62 and/or communication interface 60.
  • Network node 16 such as via processing circuitry 68 and/or processor 70 and/or radio interface 62 and/or communication interface 60 is configured to configure the WD to be responsive to a paging wake up signal, PWUS (Block S134).
  • the process also includes configuring a PWUS, associated with a specific radio network temporary identifier (RNTI) (Block S136).
  • RNTI radio network temporary identifier
  • FIG. 12 is a flowchart of an example process in a wireless device 22 according to some embodiments of the present disclosure.
  • One or more blocks described herein may be performed by one or more elements of wireless device 22 such as by one or more of processing circuitry 84 (including the PWUS monitoring unit 34), processor 86, radio interface 82 and/or communication interface 60.
  • Wireless device 22, such as via processing circuitry 84 and/or processor 86 and/or radio interface 82, is configured to wake up upon receiving a paging wake up signal, PWUS (Block S138).
  • the process also includes monitoring for a paging message when an indication in the received PWUS indicates an upcoming paging opportunity, PO (Block S140).
  • FIG. 13 is a flowchart of an example process in a network node 16 for configuring a wakeup signal for New Radio (NR) wireless device (WD) paging.
  • One or more blocks described herein may be performed by one or more elements of network node 16 such as by one or more of processing circuitry 68 (including the PWUS configuration unit 32), processor 70, radio interface 62 and/or communication interface 60.
  • Network node 16 such as via processing circuitry 68 and/or processor 70 and/or radio interface 62 and/or communication interface 60 is configured to configure a paging wake up signa, PWUS, the PWUS being associated with a radio network temporary identifier, RNTI, and including an indication of at least one paging occasion, PO, to be one of monitored and not monitored by the WD (Block S142).
  • the process also includes transmitting the PWUS to the WD (Block S144).
  • FIG. 14 is a flowchart of an example process in a wireless device 22 according to some embodiments of the present disclosure.
  • One or more blocks described herein may be performed by one or more elements of wireless device 22 such as by one or more of processing circuitry 84 (including the PWUS monitoring unit 34), processor 86, radio interface 82 and/or communication interface 60.
  • Wireless device 22, such as via processing circuitry 84 and/or processor 86 and/or radio interface 82 is configured to receive a paging wake up signal, PWUS, associated with a radio network temporary identifier, RNTI, the PWUS including an indication of at least one paging occasion, PO, to be one of monitored and not monitored (Block S146).
  • the process also includes one of monitoring and not monitoring at least one of the at least one PO as indicated by the PWUS (Block S148).
  • WI 3GPP Technical Release 17 work item
  • WUS wake-up signal
  • One idea is to send an indication to the WD before a paging message, such that the WD knows whether to monitor its paging occasions (PO).
  • PO paging occasions
  • the WD can go back to sleep and skip monitoring its PO as well as early wake-up for synchronization purposes, thereby potentially achieving power savings.
  • a purpose of transmitting a PWUS is to provide an advanced notification with a specific offset to one or more POs that an upcoming PO will contain a paging indication and paging message to one or more WDs 22 monitoring the PWUS.
  • the WD 22 can skip monitoring paging in the corresponding paging occasions.
  • the WD 22 may omit the light sleep segment after SSB measurement and sync update.
  • the WD 22 may also omit PDCCH sample collection and processing, and instead return to deep sleep immediately.
  • a separate WUS monitoring action in addition to the paging PDCCH monitoring may be expected to have a low overhead.
  • the separate WUS monitoring action may also provide an advantageous tradeoff for the WD 22 since many paging PDCCH monitoring occasions can be skipped. - Omitting the actions listed above provide a PS gain that is not compromised by additional PWUS reception.
  • FIG. 15 illustrates an example of PWUS detection timing.
  • the PWUS can be designed in different ways, e.g., a PDCCH or DCI based WUS, or a sequence based WUS, or a WUS based on a reference signal.
  • the PWUS is considered to be DCI based, arriving with a specific offset to one or more POs, and can potentially include indication to skip or monitor the underlying PO.
  • some embodiments include mechanisms with which the WD 22 can be configured with the underlying parameters of a DCI based PWUS.
  • the PWUS may be a PDCCH-based DCI, e.g., using DCI format 2-6 for idle WDs 22.
  • the PWUS may be in a new DCI format.
  • the underlying DCI format can be based on the existing DCIs, e.g., DCI format 1-0 used for paging DCI, or can be based on PS DCIs or can be based on DCI format 2-6, or a new DCI format.
  • DCI format 2-x may be specifically designed for PWUS.
  • the PWUS content can be included with the reserved bits, either together with another paging DCI message, such as in the reserved bits of an earlier paging DCI in an earlier PO, or a standalone DCI format 1-0 for PWUS.
  • the reserved index in the short message indicator of the paging DCI format 1-0 can be used to indicate that the DCI format 1-0 is for PWUS.
  • the specific configuration may indicate the DCI is intended for PWUS, e.g., a specific SS/Coreset association, or a specific time/frequency (T/F) location or a PWUS.
  • the DCI format 1-0 can be simplified further to reduce the DCI payload size, e.g., a short message indicator, T/F allocation, etc.
  • the DCI content field can be simplified, e.g., the fields related to secondary cell (Scell) dormancy indication can be removed, but the wake-up indication fields can be kept.
  • Each of the wake-up indication fields can be associated with one or more WDs 22, or one or more POs.
  • a new DCI format can be developed for PWUS, e.g., DCI format 2-x.
  • the higher layer signaling can be used to configure the WD 22 with the specific underlying parameters, which may include: the DCI size, RNTI, offset, content and bit locations, association map to relevant POs, SS/Coreset association, etc.
  • a new DCI format with new DCI size can increase the blind decoding complexity for idle mode, where in the idle mode, as opposed to an active or connected mode, the WD is not receiving or sending data (other than control signaling).
  • the network node 16 can explicitly configure the number of padding bits used when the DCI format is used for PWUS.
  • the WD 22 can take advantage of the explicit padding as preexisting information in cases where it is feasible. For example, if the WD 22 is only monitoring PWUS in a monitoring occasion, the WD 22 can use the preexisting information about zero-padding to improve detection performance. Otherwise, the WD 22 can decode the full payload and use only the relevant parts appropriately.
  • the PWUS DCI may be associated with a specific RNTI.
  • the RNTI can be the P-RNTI itself, particularly if the DCI format 1-0 is employed, or a function of P-RNTI.
  • multiple RNTIs can be used for different PWUSs associated with different POs.
  • Other existing RNTIs can also be used.
  • ps-RNTI can be used for DCI format 2-6, or the WD 22 can be configured with a specific paging power saving RNTI, for example, pps-RNTI.
  • each PWUS may be associated with a different RNTI. Then, when the associated WD 22 receives the PWUS (potentially with a 0 bit payload) with a specific RNTI, the WD 22 may conclude that the WD 22 can expect a paging message in the associated PO.
  • An explicit RNTI can be configured for use with a PWUS associated with one or more paging occasions. For instance, if there are 128 POs configured in a cell, at most 128 RNTIs can be configured. A many-to-one mapping can be designed to reduce the number of RNTIs for PWUS. A group of RNTIs can be configured for use with PWUS for the cell, and a predetermined mapping can be specified to associate one or more paging occasion(s) and an RNTI from that group of RNTIs. This allows the network node 16 to control different POs with PWUS with different RNTIs.
  • the SS/Coreset associated with PWUS may be the same as that associated with paging PDCCH, especially if PWUS is embedded in paging DCI. Alternatively, a separate SS may be used. In one embodiment, a narrower CORESET may be used to allow the WD 22 to perform PWUS monitoring with a more power-efficient receiver configuration. In another embodiment, the PWUS SS may be tailored to define the PWUS monitoring occasions or monitoring window.
  • the PWUS offset is defined as the offset to a specific PO or a paging frame, e.g., X ms before the PO, or before a specific PO within the group of POs that the PWUS is associated with, which could be the first PO in that group.
  • a specific PO e.g., X ms before the PO
  • a specific PO within the group of POs that the PWUS is associated with
  • milliseconds ms
  • other time units such as slots or frames can be used.
  • the PWUS offset determines the location of the PWUS occasion, while in an alternative approach, the PWUS offset determines the start of the location after which the WD 22 may expect the PWUS, i.e., the start of the PWUS monitoring window.
  • the PWUS offset may additionally determine an end point of the monitoring window, or include a PWUS range (i.e., a time range) within which the WD 22 can monitor PWUS DCI.
  • the WD 22 may monitor PWUS DCI from X ms to Y ms before a specific PO, or a specific PO within a group of POs.
  • PWUS offset and/or range can be configured explicitly, e.g., by higher layer signaling such as SI, or implicitly, e.g., by a specific SS association.
  • the offset and/or range are implicitly configured as part of one or more preceding POs.
  • the search space type for PWUS can be explicitly configured by higher layers to be one of Type 2 CSS or Type 3 CSS. Different types of search spaces may lead to different characteristics such as a WD’s ability to receive the corresponding information.
  • the search space ID for PWUS can be the same or different from the search space ID used for paging reception.
  • a specific SS associated with a Coreset (e.g., Coreset 0 or another Coreset), can be used to indicate the PWUS MOs.
  • the WD 22 may be configured with multiple PWUS MOs, i.e., one or more SSs associated with a Coreset, or alternatively, one SS associated with a Coreset.
  • including an SS duration parameter of more than 1, i.e., the same SS being repeated in one or more of the upcoming slots, depending on the value configured for the SS duration parameter, may occur.
  • the WD 22 when the WD 22 is configured with a specific paging configuration, it means that the WD 22 receives a specific configuration for paging from higher layer signaling, such as SI or dedicated signaling as part of PCCH-config broadcasted through a SI. As such, the WD 22 is informed of the configuration in terms of a number of paging frames (PFs), number of POs per PF, or in this case, the PWUS MO, etc. Therefore, the WD 22 knows, for example, in which occasions to monitor paging, or the PWUS. In this specific example, the WD 22 receives a configuration related to PWUS MO which is one or more specific SSs, and as such, the WD 22 can monitor PWUS in such occasions according to the configured SSs.
  • PFs paging frames
  • the WD 22 receives a configuration related to PWUS MO which is one or more specific SSs, and as such, the WD 22 can monitor PWUS in such occasions according to the configured SSs.
  • a PWUS indicates a PO to be monitored or not monitored based on a frequency of paging. For example, in some embodiments, when the frequency of paging in a PO is above a first threshold, then the PO is monitored, whereas when the frequency of paging in PO is lower than a second threshold, then the PO is not monitored.
  • the WD 22 can be further configured (or preconfigured e.g., as part of specifications) if one or more SSs are valid as PWUS MOs.
  • the WD 22 may be configured to only consider the first occasion of a SS within the valid PWUS range as a PWUS MO, and the rest are not considered as PWUS MOs.
  • the SS duration parameter is more than one, only the first of them is considered as a PWUS MO, in some embodiments.
  • the PWUS MO can be configured based on a pre-configured formula, e.g., as part of the specifications.
  • a function of WD 22 ID e.g., the same ID which is used by the WD 22 to obtain its PO
  • a PWUS MO can be used to determine a PWUS MO, or a PWUS range within which the WD 22 is expected to monitor PWUS. This is called a PWUS occasion.
  • one or more PWUS MO can be configured as part of the PWUS occasion configuration such that the WD 22 can monitor PWUS in those occasions.
  • each PWUS is associated with a specific PO.
  • a group of POs i.e., more than two POs
  • Association of the PWUS and POs can be part of the higher layer signaling configuration of PWUS.
  • the group of POs can be consecutive POs, or alternatively selected based on a formula, or explicit selection. These POs may be monitored by different WDs 22, i.e., multiple WDs 22 will be monitoring a given PWUS. For example, if two POs are associated with a PWUS, the first and the second PO can in sequence, and the PWUS can be configured before the first PO. As such, the PWUS MO, offset, or range can be configured with respect to the first PO, but the PWUS indication can be associated to both POs.
  • the group of POs may be multiple subsequent POs monitored by a certain WD 22, whereby the PWUS signals that the WD 22 should monitor multiple of its coming POs.
  • the WD 22 may be associated to one or more specific paging groups.
  • the PWUS may be associated with a paging group in addition to a PO.
  • the WD 22 may monitor PWUS in a specific PWUS MO, and receives an indication by the PWUS that the paging group that it belongs to may be paged in one or more of the upcoming Pos. Then, if the WD 22 belongs to the associated paging group, the WD 22 should wake up in its own PO, expecting that the group that the WD 22 belongs to is paged in this PO.
  • the PWUS can be associated with one or more POs and can be received in a specific PWUS MO. with a specific configuration parameter, e.g., a specific SS, a specific RNTI, a specific offset, etc.
  • the DCI payload may be 0 bits, i.e., a DCI size of 0.
  • the WD 22 may indicate that the WD 22 can expect a paging message in the associated POs or paging groups.
  • the DCI contents and the WD 22 behavior upon detection of PWUS can be configured by the network node 16, e.g., through higher layer signaling.
  • the payload can contain a bitfield indicating which paging occasions will contain a paging message
  • the network node 16 configuration can include information about the bitfield and the corresponding association between the bitfield and the paging occasions, e.g., bit-x corresponding to the information about paging messages sent in PO-y.
  • bit-x corresponding to the information about paging messages sent in PO-y.
  • the network node 16 can configure a bitfield of length four in the PWUS DCI and use four bits in the PWUS DCI to indicate which of the four paging occasions contain a paging message.
  • the network node 16 can additionally configure 2 bits per PO to indicate any grouping information - for example bitO may indicate a WD 22 with odd identification number (WDID) (or within a first group) having a paging message in the PO, and bitl indicates whether a WD 22 with even WDID (or within a second group) has a paging message in the PO.
  • WDID odd identification number
  • bitl indicates whether a WD 22 with even WDID (or within a second group) has a paging message in the PO.
  • each PO and/or paging group and indication bit may be included, where the indication bit can indicate if the WD 22 should monitor its PO (e.g., if the indication bit is “1”) or when the WD 22 could skip monitoring its PO.
  • the indication is a wake-up indication - if the PWUS is detected (or in another example, the PWUS and the corresponding bit associated with the WDID or the group ID associated with the WDID is detected), the WD 22 should monitor its upcoming PO. If the WD 22 chooses to rely on PWUS indications for PO monitoring, the WUS reception quality may be sufficiently robust, since a missed WUS will lead to a missed paging reception (leading to paging escalation or re-attempt of paging). This solution may also be selected when most POs are empty (e.g., no pages). WUS configuration/transmission parameters, e.g., resource allocation and modulation and coding scheme (MCS) selection, is then optimized to minimize the missed detection probability.
  • MCS modulation and coding scheme
  • the network node 16 can configure the WUS as a go-to-sleep indication.
  • the WUS When the WUS is detected, the WD 22 need not monitor its upcoming PO. This solution may also be selected when most POs are occupied. PWUS configuration is then optimized to minimize the false alarm probability.
  • the network node 16 can explicitly configure the functionality and interpretation of the bit in the bitfield in a PWUS DCI.
  • the functionality can be indicated via system information signaling associated with the paging and/or paging WUS indication.
  • the functionality can indicate a wake-up command, or a go-to-sleep command with a configured action that the WD 22 follows in the absence of detection of the PWUS DCI in PWUS MO(s).
  • This functionality can be configured separately based on different paging occasions, or based on different WD 22 types (e.g. wake-up for normal WDs 22, and go-to-sleep for RedCap WDs 22, etc.).
  • the WD 22 may then monitor the associated paging occasion.
  • the WD 22 detects a PWUS DCI in PWUS MO(s) and the corresponding bit associated with the WD 22 indicates a second value
  • the WD 22 can skip monitoring the associated paging occasion.
  • the WD 22 does not detect a PWUS DCI in PWUS MO(s)
  • the WD 22 can skip monitoring the associated paging occasion.
  • the WD 22 For functionality that indicates a go-to-sleep command, when the WD 22 detects a PWUS DCI in PWUS MO(s) and the corresponding bit associated with the WD 22 indicates a first value, the WD 22 monitors the associated paging occasion. When the WD 22 detects a PWUS DCI in PWUS MO(s) and the corresponding bit associated with the WD 22 indicates a second value, the WD 22 can skip monitoring the associated paging occasion. When the WD 22 does not detect a PWUS DCI in PWUS MO(s), the WD 22 monitors the associated paging occasion.
  • a benefit of the go-to-sleep command is that the network node 16 can opportunistically allow the WD 22 to save power without increased network node power consumption. This is so because the network node 16 can potentially bundle the PWUS for one or a group of WDs 22 into reserved bits of a paging DCI intended for another WD 22.
  • the interpretation of the indicator can be configured by the network node 16 as part of the PWUS configuration through higher layer signaling, such as SI or radio resource control (RRC) signaling. Alternatively, the interpretation of the indicator can be pre-defined in the standard.
  • additional commands such as the T/F resource allocation of paging PDSCH can also be included in the same DCI, e.g., if DCI format 1-0 is employed and PWUS is multiplexed in the same DCI as the paging DCI.
  • the DCI size, payload and its content including configuration of specific bitfields for specific operations can be done through higher layer signaling.
  • additional bits e.g., T/F allocation, transport block (TB) scaling, and MCS, may be considered as reserved, and omitted.
  • the PWUS may also be multiplexed in the same DCI which includes a short message, or in the sDCI which includes both a short message as well as a paging message.
  • the DCI payload may indicate the number of such subsequent POs (DRX cycles) to monitor.
  • the PWUS DCI may also provide additional paging on the PDCCH or the physical downlink shared channel (PDSCH) configuration information where the formats can be adopted dynamically on a per-PO basis.
  • the PWUS may carry PDCCH and/or PDSCH configuration constraints that may be stricter than the configuration provided in the SI, for example, cross-slot transmission, a narrower PDCCH bandwidth BW than the CORESET or narrower PDSCH bandwidth than the default maximum. This may mean fewer BD candidates, etc.
  • the WD 22 can then operate the PDCCH/PDSCH receiver in a more efficient configuration. If the WD 22 does not monitor the PWUS, it can still receive the paging signaling using the default assumptions based on the current configuration.
  • the WD 22 may be mandated to monitor the PWUS and obtain PDCCH SS, format, or other configuration information that may differ from the current default configuration.
  • the network node 16 may configure the parameters described herein through higher layer signaling, e.g., SI.
  • SI higher layer signaling
  • the parameters can be configured as part of the PCCH-config.
  • the configuration can be cell-specific, or WD specific.
  • WUS configuration may be provided in SI (e.g., remaining minimum system information (RMSI), other system information (OSI), and/or system information block (SIBn)).
  • SI e.g., remaining minimum system information (RMSI), other system information (OSI), and/or system information block (SIBn)
  • Configuration information may include DCI format, DCI size, offset, SS; T/F location, etc.
  • the WD behavior upon detection of a PWUS can be part of the configuration.
  • the network node 16 may signal WUS indication - ’wake up” if paging is infrequent (low PO occupancy) and WUS indication - ’sleep on” if a large fraction of POs are occupied and/or when maximal paging robustness is desired.
  • PWUS interpretation can be further configured by the NW based on its load. For example, when the load is low, PWUS can be configured to be interpreted as to monitor PO, but if the load is high, PWUS
  • the WD behavior upon not detecting the PWUS is either preconfigured, e.g., as part of specifications, or configured explicitly by the network node 16. For example, when the WD 22 does not detect PWUS in any of PWUS MOs, then the WD 22 should monitor its PO.
  • PWUS activation indication may be explicit, via an indicator bit in the SI, or implicit through presence or absence of configuration information in SI.
  • the network node 16 may provide a SI change indication when the PWUS presence status changes.
  • activating PWUS is not accompanied by an SI change indication and the WD 22 can check the SI contents to utilize the PWUS function, but the deactivation is accompanied by an SI change.
  • the deactivation can also be based on LI indications e.g., the current paging DCI can activate/deactivate PWUS.
  • the PWUS may be provided only to WDs 22 that last connected in the camping cell.
  • Configuration information may be provided via dedicated RRC while the WD 22 is in connected mode.
  • the PWUS configuration is part of the RRC release message.
  • the PWUS is only valid for a specific amount of time, determined by a validity timer.
  • the validity timer can be in units of slots, POs or milliseconds, for example.
  • the network node 16 may further configure the WD 22 with specific indications to extend or stop the validity timer. For example, reception of PWUS may extend the validity timer, or an indication, e.g., a paging DCI can stop the timer.
  • the network may further provide a link quality limit for PWUS reception.
  • camping WDs 22 whose link quality exceeds the threshold may be allowed to rely on WUS, while other WDs 22 may monitor the PDCCH in their POs.
  • network node 16 may use approaches where not only configuration parameters are adaptable, but so also a WUS mode is adaptable. The network node 16 can thus use an adaptive PWUS strategy. If the paging load is low, a separate PWUS PDCCH may be sent, e.g., close to the nearest SSB. At high load, e.g., >50% POs occupied, the PWUS may be embedded in other POs. The PWUS configuration information in the SI indicates which mode is currently in effect. An SI update message may be sent when the mode is changed.
  • An adaptive selection may also be applied to determine PWUS DCI formats.
  • the network load may also be used to choose from different DCI formats, or configurations. For example, when the load is high, the PWUS can be multiplexed with other paging DCIs but when the load is low, the PWUS can be in a dedicated DCI with only WUS contents.
  • a network node 16 is configured to communicate with a wireless device, WD 22.
  • the network node 16 includes processing circuitry 68 configured to configure a paging wake up signal, PWUS, the PWUS being associated with a radio network temporary identifier, RNTI, and including an indication of at least one paging occasion, PO, to be one of monitored and not monitored by the WD 22.
  • the network node 16 also includes a radio interface 62 in communication with the processing circuitry and configured to transmit the PWUS to the WD 22.
  • the RNTI to which the PWUS is associated depends on a format of downlink control information, DCI, configured to carry the PWUS transmitted by the radio interface.
  • the RNTI to which the PWUS is associated is a P-RNTI when the DCI format is 1-0.
  • the PWUS is configured to wake up the WD 22 from one of an idle mode and an inactive mode.
  • the processing circuitry 68 is further configured to configure the WD 22 to monitor the PWUS according to a selected one of a plurality of search space configurations.
  • the PWUS is associated with a plurality of POs.
  • each of the at least one PO is selected to be one of monitored and not monitored based on a formula.
  • the PWUS is included in a downlink control information, DCI, message on a physical downlink control channel, PDCCH.
  • the DCI message includes PO usage information.
  • a DCI message size of zero indicates that an upcoming PO is to be one of monitored and not monitored.
  • the processing circuitry 68 is further configured to multiplex the DCI message with other DCI messages based on a network load.
  • the PWUS further indicates which of a plurality of upcoming POs have a paging message.
  • the PWUS is configured by the network node 16 to indicate a PO to be one of monitored and not monitored based on a frequency of paging.
  • the PWUS is configured to be valid for a finite duration of time.
  • a method in a network node 16 configured to communicate with a wireless device, WD 22, includes configuring a paging wake up signal, PWUS, the PWUS being associated with a radio network temporary identifier, RNTI, and including an indication of at least one paging occasion, PO, to be one of monitored and not monitored by the WD 22.
  • the method also includes transmitting the PWUS to the WD 22.
  • the RNTI to which the PWUS is associated depends on a format of downlink control information, DCI, configured to carry the PWUS transmitted by the radio interface.
  • the RNTI to which the PWUS is associated is a P-RNTI when the DCI format is 1-0.
  • the PWUS is configured to wake up the WD 22 from one of an idle mode and an inactive mode.
  • the method also includes configuring the WD 22 to monitor the PWUS according to a selected one of a plurality of search space configurations.
  • the PWUS is associated with a plurality of POs.
  • each of the at least one PO is selected to be one of monitored and not monitored based on a formula.
  • the PWUS is included in a downlink control information, DCI, message on a physical downlink control channel, PDCCH.
  • the DCI message include PO usage information.
  • a DCI message size of zero indicates that an upcoming PO is to be one of monitored and not monitored.
  • the processing circuitry is further configured to multiplex the DCI message with other DCI messages based on a network load.
  • the PWUS further indicates which of a plurality of upcoming POs have a paging message.
  • the PWUS is configured by the network node 16 to indicate a PO to be one of monitored and not monitored based on a frequency of paging.
  • the PWUS is configured to be valid for a finite duration of time.
  • a WD 22 configured to communicate with a network node 16 is provided.
  • the WD 22 includes a radio interface 82 configured to receive a paging wake up signal, PWUS, associated with a radio network temporary identifier, RNTI, the PWUS including an indication of at least one paging occasion, PO, to be one of monitored and not monitored.
  • the WD 22 also includes processing circuitry 84 in communication with the radio interface and configured to one of monitor and not monitor at least one of the at least one PO as indicated by the PWUS.
  • the RNTI to which the PWUS is associated depends on a format of downlink control information, DCI, configured to carry the PWUS.
  • the RNTI to which the PWUS is associated is a P-RNTI.
  • the RNTI to which the PWUS is associated is a ps-RNTI.
  • the RNTI to which the PWUS is associated is a paging power saving RNTI.
  • the PWUS is configured to wake up the WD 22 from one of an idle mode and an inactive mode.
  • the processing circuitry 84 is further configured to monitor a PWUS according to a selected one of a plurality of search space configurations.
  • a method in a WD 22 configured to communicate with a network node 16 includes receiving a paging wake up signal, PWUS, associated with a radio network temporary identifier, RNTI, the PWUS including an indication of at least one paging occasion, PO, to be one of monitored and not monitored. The method also includes one of monitoring and not monitoring at least one of the at least one PO as indicated by the PWUS.
  • PWUS paging wake up signal
  • RNTI radio network temporary identifier
  • the method also includes one of monitoring and not monitoring at least one of the at least one PO as indicated by the PWUS.
  • the RNTI to which the PWUS is associated depends on a format of downlink control information, DCI, configured to carry the PWUS.
  • the RNTI to which the PWUS is associated is a P-RNTI.
  • the RNTI to which the PWUS is associated is a ps-RNTI.
  • the RNTI to which the PWUS is associated is a paging power saving RNTI.
  • the PWUS is configured to wake up the WD 22 from one of an idle mode and an inactive mode.
  • the method also includes monitoring a PWUS according to a selected one of a plurality of search space configurations.
  • a network node 16 is configured to communicate with a wireless device (WD) 22.
  • the network node 16 includes a radio interface and/or comprising processing circuitry configured to configure the WD 22 to be responsive to a paging wake up signal, PWUS, and configure a PWUS, associated with a specific radio network temporary identifier (RNTI).
  • PWUS paging wake up signal
  • RNTI radio network temporary identifier
  • the PWUS is configured to provide notice to the WD 22 of upcoming paging opportunities, POs.
  • the PWUS is configured to indicate an offset to at least one paging opportunity, PO.
  • the PWUS is configured to skip or monitor an underlying paging opportunity. In some embodiments, comprising transmitting the PWUS in a downlink control information, DCI, signal.
  • a method implemented in a network node 16 includes configuring the WD 22 to be responsive to a paging wake up signal, PWUS, and configuring a PWUS, associated with a specific radio network temporary identifier (RNTI).
  • PWUS paging wake up signal
  • RNTI radio network temporary identifier
  • the PWUS is configured to provide notice to the WD 22 of upcoming paging opportunities, POs.
  • the PWUS is configured to indicate an offset to at least one paging opportunity, PO.
  • the PWUS is configured to skip or monitor an underlying paging opportunity.
  • the method further includes transmitting the PWUS in a downlink control information, DCI, signal.
  • a WD 22 is configured to communicate with a network node 16.
  • the WD 22 includes a radio interface and/or processing circuitry configured to wake up upon receiving a paging wake up signal, PWUS, and monitor for a paging message when an indication in the received PWUS indicates an upcoming paging opportunity, PO.
  • the WD 22 is configured to enter a deep sleep when no paging message is received within a period of time.
  • the WD 22 is configured to interpret the indication by inspecting a down link control information, DCI, message associated with a particular radio network temporary identifier (RNTI).
  • DCI down link control information
  • RNTI radio network temporary identifier
  • a method implemented in a wireless device includes waking up upon receiving a paging wake up signal, PWUS, and monitoring for a paging message when an indication in the received PWUS indicates an upcoming paging opportunity, PO.
  • the WD 22 is configured to enter a deep sleep when no paging message is received within a period of time.
  • the WD 22 is configured to interpret the indication by inspecting a down link control information, DCI, message associated with a particular radio network temporary identifier, RNTI.
  • a network node configured to communicate with a wireless device (WD), the network node configured to, and/or comprising a radio interface and/or comprising processing circuitry configured to: configure the WD to be responsive to a paging wake up signal, PWUS; and configure a PWUS, associated with a specific radio network temporary identifier (RNTI).
  • WD wireless device
  • PWUS paging wake up signal
  • RNTI radio network temporary identifier
  • Embodiment A2 The network node of Embodiment Al, wherein the PWUS is configured to provide notice to the WD of upcoming paging opportunities, POs.
  • Embodiment A3 The network node of any of Embodiments Al and A2, wherein the PWUS is configured to indicate an offset to at least one paging opportunity, PO.
  • Embodiment A4 The network node of any of Embodiments A1-A3, wherein the PWUS is configured to skip or monitor an underlying paging opportunity.
  • Embodiment A5 The network node of any of Embodiments A1-A4, wherein the network node and/or the processing circuitry and/or the radio interface are further configured to transmit the PWUS in a downlink control information, DCI, signal.
  • Embodiment Bl A method implemented in a network node, the method comprising: configuring the WD to be responsive to a paging wake up signal, PWUS; and configuring a PWUS, associated with a specific radio network temporary identifier (RNTI).
  • PWUS paging wake up signal
  • RNTI radio network temporary identifier
  • Embodiment B3 The method of any of Embodiments Bl and B2, wherein the PWUS is configured to indicate an offset to at least one paging opportunity, PO.
  • Embodiment B4 The method of any of Embodiments B1-B3, wherein the PWUS is configured to skip or monitor an underlying paging opportunity.
  • Embodiment B5 The method of any of Embodiments B1-B4, further comprising transmitting the PWUS in a downlink control information, DCI, signal.
  • a wireless device configured to communicate with a network node, the WD configured to, and/or comprising a radio interface and/or processing circuitry configured to: wake up upon receiving a paging wake up signal, PWUS; and monitor for a paging message when an indication in the received PWUS indicates an upcoming paging opportunity, PO.
  • PWUS paging wake up signal
  • Embodiment C2 The WD of Embodiment Cl, wherein the WD and/or the processing circuitry and/or the radio interface is configured to enter a deep sleep when no paging message is received within a period of time.
  • Embodiment C3 The WD of any of Embodiments Cl and C2, wherein the WD and/or the processing circuitry and/or the radio interface is configured to interpret the indication by inspecting a down link control information, DCI, message associated with a particular radio network temporary identifier (RNTI).
  • DCI down link control information
  • RNTI radio network temporary identifier
  • Embodiment DI A method implemented in a wireless device (WD), the method comprising: waking up upon receiving a paging wake up signal, PWUS; and monitoring for a paging message when an indication in the received PWUS indicates an upcoming paging opportunity, PO.
  • Embodiment D2 The method of Embodiment DI, wherein the WD is configured to enter a deep sleep when no paging message is received within a period of time.
  • Embodiment D3 The method of any of Embodiments Cl and C2, wherein the WD is configured to interpret the indication by inspecting a down link control information, DCI, message associated with a particular radio network temporary identifier, RNTI.
  • DCI down link control information
  • RNTI radio network temporary identifier
  • the concepts described herein may be embodied as a method, data processing system, computer program product and/or computer storage media storing an executable computer program. Accordingly, the concepts described herein may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects all generally referred to herein as a “circuit” or “module.” Any process, step, action and/or functionality described herein may be performed by, and/or associated to, a corresponding module, which may be implemented in software and/or firmware and/or hardware. Furthermore, the disclosure may take the form of a computer program product on a tangible computer usable storage medium having computer program code embodied in the medium that can be executed by a computer. Any suitable tangible computer readable medium may be utilized including hard disks, CD-ROMs, electronic storage devices, optical storage devices, or magnetic storage devices.
  • These computer program instructions may also be stored in a computer readable memory or storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instruction means which implement the function/act specified in the flowchart and/or block diagram block or blocks.
  • the computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.
  • Computer program code for carrying out operations of the concepts described herein may be written in an object oriented programming language such as Java® or C++.
  • the computer program code for carrying out operations of the disclosure may also be written in conventional procedural programming languages, such as the "C" programming language.
  • the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer.
  • the remote computer may be connected to the user's computer through a local area network (LAN) or a wide area network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider).
  • LAN local area network
  • WAN wide area network
  • Internet Service Provider for example, AT&T, MCI, Sprint, EarthLink, MSN, GTE, etc.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé, un système et un appareil pour configurer un signal de réveil pour le téléavertissement d'un dispositif sans fil (WD) New Radio (NR). Selon un aspect, un procédé exécuté dans un WD consiste à recevoir un signal de réveil de téléavertissement (PWUS) associé à un identifiant temporaire de réseau radio (RNTI), le PWUS comprenant une indication d'au moins une opportunité de téléavertissement (PO), devant être l'une de surveillée et de non surveillée, et l'une de la surveillance et de la non surveillance d'au moins l'une de la ou des PO comme indiqué par le PWUS.
EP21794364.6A 2020-10-16 2021-10-18 Configuration de signal de réveil pour le téléavertissement d'un dispositif sans fil new radio Pending EP4229924A1 (fr)

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PCT/EP2021/078736 WO2022079310A1 (fr) 2020-10-16 2021-10-18 Configuration de signal de réveil pour le téléavertissement d'un dispositif sans fil new radio

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US20220116875A1 (en) * 2019-01-10 2022-04-14 Telefonaktiebolaget Lm Ericsson (Publ) Wake-Up Signal (WUS) Controlled Actions
JP7312848B2 (ja) * 2019-04-02 2023-07-21 テレフオンアクチーボラゲット エルエム エリクソン（パブル） 物理ダウンリンク制御チャネル（ｐｄｃｃｈ）ベースのウェイクアップ信号（ｗｕｓ）設定のための方法

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